Automobile steering wheel lock anti-theft device with sound warning device

Abstract: An anti-theft device with a sound warning device (2) for attachment to the steering wheel of an automobile comprising a sound warning device (2) deposited in an inner cavity (100) in an elongate rod (10) of the steering wheel lock (1), the sound warning device consisting of a case (20), an electronic circuit board (21) contained in the case and having electronic components to send out a signal to a sound system of the automobile to give out a warning sound in case the body or the steering wheel should be touched by a would-be burglar, and a cover (22) closing on the case in the cavity in the rod.

Description: The present invention relates to an automobile steering wheel lock anti-theft device with a sound warning device. At present, most anti-theft devices for attachment to the steering wheel of an automobile have no sound warning device liable to be forcefully pried open by tools. Corresponding to the subject matter of the preamble of claim 1, GB-A-2264911 describes a portable anti-theft alarm comprising an elongate bar which locks to a vehicle steering wheel so as to extend tangentially from the rim thereof. The alarm includes a sound warning device and is triggered either in response to electrical changes sensed in the vehicle electrical system to which it is connected by a power lead or by activation of a sound or motion sensor. The bar is hollow to accommodate the necessary electrical and electronic components. This invention has been devised to offer an anti-theft device with a sound warning device for attachment to the steering wheel of an automobile controlled by a remote controller enabling the sound warning device to be started in case the body or the steering wheel of an automobile should be touched by a would-be burglar. The present invention is characterised by the features of claim 1. The present invention will now be described further, by way of example only, with reference to the accompanying drawings, in which:- Figure 1 is an exploded perspective view of an anti-theft device with a sound warning device for attachment to the steering wheel of an automobile in the present invention, and Figure 2 is a perspective view of the anti-theft device with a sound warning device for attachment to the steering wheel of an automobile in the present invention. An anti-theft device with a sound warning device for attachment to the steering wheel of an automobile in the present invention as shown in Figure 1 comprises a steering lock 1 and sound warning device 2. An elongate rod 10 in the steering lock 1 has an inner cavity 100 in an end portion, two opposite steps 101, 102 and two threaded holes 103, 104 in the steps 101, 102. The sound warning device 2 has a case 20, an electronic circuit board 21 and a cover 22 assembled together and mounted in the cavity 100 of the elongate rod 10 and secured with screws N, N 1 . In the case 20 are provided four small cushions 200 in four corners. One of the four cushions 200 has a round hole 201, and two tubular posts 202 are provided near two diagonal corners. The electronic circuit board 21 is placed in the case 20, laid on the four cushions 220, having round holes 210, 211 corresponding to the hole 201 and the tubular posts 202, and a power source base 212, a tremble sensor 213, a switch 214, a power signal lamp 215, etc. are mounted on the circuit board 21 and connected together for controlling a sound system in an automobile. The cover 22 has the same shape as the cavity 100, two round holes 220, 221 corresponding to the threaded holes 103, 104, and two threaded tubular posts 222, 223 corresponding to the holes 201 and tubular posts 202 of the case 20, a pair of support plates 224 for the power source base 212, a rectangular hole 225 for the switch 214 and a through hole 226 for the power signal lamp. After this lock is locked on the steering wheel of an automobile, the switch 214 of the sound warning device 2 is to be turned ON to light up the power signal lamp 215 showing the whole device in electrified condition, and then a remote controller is operated to turn the device 2 in a warning condition as shown in Figure 2. Then if a burglar should touch the body or the steering wheel, the device 2 would send out a signal by sensing a tremble caused by the burglar, starting the sound system to give out warning sound to surprise the burglar. To cancel the warning condition of the device 2, the remote controller is to be operated to turn the device 2 out of the warning condition, and then the switch 214 is to be turned OFF.

Claims: An automobile steering wheel anti-theft device for attachment to a steering wheel of an automobile, the anti-theft device comprising a sound warning device (2) mounted in an inner cavity (100) in an elongate rod (10) of a steering lock (1), said sound warning device consisting of a case (20), an electronic circuit board (21) mounted in the case, and a cover (22) to close the case to protect the circuit board, the electronic circuit board being composed of electronic components to send out a signal to the sound warning device for giving out warning sound in case a would-be-burglar touches a body or the steering wheel of the automobile and characterised in that the case is provided with a plurality of cushions (200) on which the circuit board (21) is laid and in which the circuit board has holes (210, 211) to receive in alignment therewith a respective tubular post (202, 222, 223) of the case (201) and/or the cover (22). An automobile steering wheel anti-theft device as claimed in claim 1 in which at least one of the cushions (200) has a through hole (201) which is in alignment with one of said posts (222). An automobile steering wheel anti-theft device as claimed in claim 1 or 2 in which the cover (22) has the posts (222, 223) and the case (20) has holes in alignment with the posts, (222, 223) which posts (222, 223) are threaded internally, and wherein the holes in the case (20) receive screws (N 1 ) which engage with the threaded posts (222, 223) for fixing the cover (22) to the case (20).

Inventors: CHEN TIAN-YUAN, CHEN, TIAN-YUAN
Applicants: CHEN TIAN YUAN, CHEN, TIAN-YUAN
Application year: 1994
Main classification: B60R25
IPC codes: B60R25